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 Date: 2011-09-21 13:45:51Birch Betula papyrifera Betula nigra Bark Taxonomy of Betula Marion Brooks Natural Area Flora of the United States Flora Ornamental trees |
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| First Page | Document Content | |
|---|---|---|
Date: 2011-09-21 13:45:51Birch Betula papyrifera Betula nigra Bark Taxonomy of Betula Marion Brooks Natural Area Flora of the United States Flora Ornamental trees |
Add to Reading List |
Paper Birch Paper birch is perhaps the most uncommon tree in Colorado – only one native tree, perhaps. I know of one cool shaded canyon with numerous trees and clumps of what appears